oh woops, i was using grapes post in #4, haven't tried #3
edit: ok #3 is supposed to do that, you press it twice to switch to another class and back
because of the delay there's nothing you can do about it
the closest you'll get to a 1 press is grapes method but you'll still have to accoutn for the delay by holding the key down a tad longer than usual
also the disadvantage to this sort of script is that if you mistime it and hit it too early outside of spawn you've basically fucked yourself while a class change is on cool down